581079509802 has 32 divisors (see below), whose sum is σ = 1408677600960. Its totient is φ = 176084699760.

The previous prime is 581079509789. The next prime is 581079509887. The reversal of 581079509802 is 208905970185.

581079509802 is a `hidden beast` number, since 58 + 1 + 0 + 7 + 9 + 509 + 80 + 2 = 666.

It is a super-2 number, since 2×581079509802² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489123573 + ... + 489124760.

It is an arithmetic number, because the mean of its divisors is an integer number (44021175030).

Almost surely, 2^581079509802 is an apocalyptic number.

581079509802 is an abundant number, since it is smaller than the sum of its proper divisors (827598091158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

581079509802 is a wasteful number, since it uses less digits than its factorization.

581079509802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978248355 (or 978248349 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The spelling of 581079509802 in words is "five hundred eighty-one billion, seventy-nine million, five hundred nine thousand, eight hundred two".